If you have the compressor mount than its easy, I made one. Go to Mcmaster and buy a pressure switch and wire it in series with the ground cirtuit, leave the power side wired. This will cycle the compressor for whatever pressure you set and run whenever it wants. You will need to use a copper line coming out of the pressure side of the pump, I melted a plastic line. I went from the pump to a air water separator that drained everytime the pressure dropped then to the tank. On the intake side I used a air oiler with the compressor oil and a little K&N filter. The oiler will be on McMaster also you just set it to so many drips per min, easy.
I think its the best way to go I ran it for 2 years and neber had a problem. The electric pumps are slow, this thing works great. You should google it I think thats were I got the idea.